Outdoor Gate Closer
Heavy Duty Stainless Steel with Self Closing
Waterson’s advanced adjustable heavy duty gate closers are engineered to provide seamless interior and exterior gate closing. Crafted from weldable stainless steel, these heavy duty gate closer perform extremely well under harsh weather conditions.
Our ADA-compliant spring loaded heavy duty gate closer operate easily and effortlessly with less than 5lbs of opening force. Available in a variety of finishes, these automatic gate closer are perfect for commercial and residential applications.
Features
- Minimizes rust and corrosion
- Stainless steel gate closer 304 (marine SS316 per order)
- Up to 5-year warranty
- Quality assured and traceable
- Oceanside 3-year field tested
- ADA closing speed control
- Weather cap extends product life
- Multiple extender sizes available
- Suitable for 2″, 3″ and 4″ steel square posts
Features
- Minimizes rust and corrosion
- Stainless steel gate closer 304 (marine SS316 per order)
- Up to 5-year warranty
- Quality assured and traceable
- Oceanside 3-year field tested
- ADA closing speed control
- Weather cap extends product life
- Multiple extender sizes available
- Suitable for 2″, 3″ and 4″ steel square posts
Specification
| Hinge Type | Gate Size | Product SKU |
FEATURES Door Range ≤ 120° |
Closing Type
Mechanical Only – M |
Closer Qty
Closer Type |
Finish | ||
|---|---|---|---|---|---|---|---|---|
| Self-closing | Fluid Motion | 90°Hold-open | ||||||
| Mid-Posts (interior) |
≤ 150 lbs < 6’-0 x 4′-0 |
K51M-A2 | ● | M | 2 closers/gate (SA.SA1) | Stocking
US32D-630-Satin Stainless Steel Special Order US10B-695-Dark Satin Bronze – Powder coating on SST
|
||
| K51M-B2 | ● | ● | H | 2 closers/gate (DS.HA) | ||||
| ≤ 260 lbs < 7’-0 x 4′-0 |
K51M-A3 | ● | M | 3 closers/gate (SA.SA.SA1) | ||||
| K51M-B3 | ● | ● | H | 3 closers/gate (DS.HA.SA1) | ||||
| K51M-C3 | ● | ● | M | 3 closers/gate (SB.SA.SA1) | ||||
| K51M-D3 | ● | ● | ● | H | 3 closers/gate (DS.HA.SB) | |||
1. We provide additional door stop ( at 90°) features for all models. Email to request a quotation.
2. Learn more about Waterson gate closer design (SA,SA1,SB,…)
3. Learn more about mechanical or hydraulic hybrid closing types, or watch video
4. Please contact us directly concerning doors over the above specifications.
| Hinge Type | Gate Size | Product SKU |
FEATURES Door Range ≤ 120° |
Closing Type
Mechanical Only – M |
Closer Qty
Closer Type |
Finish | ||
|---|---|---|---|---|---|---|---|---|
| Self-closing | Fluid Motion | 90°Hold-open | ||||||
| Mid-Posts (exterior) |
≤ 150 lbs < 6’-0 x 4′-0 |
K51MP-A2 | ● | M | 2 closers/gate (SA.SA1) | Stocking
US32D-630-Satin Stainless Steel Special Order US10B-695-Dark Satin Bronze – Powder coating on SST
|
||
| K51MP-B2 | ● | ● | H | 2 closers/gate (DS.HA) | ||||
| ≤ 260 lbs < 7’-0 x 4′-0 |
K51MP-A3 | ● | M | 3 closers/gate (SA.SA.SA1) | ||||
| K51MP-B3 | ● | ● | H | 3 closers/gate (DS.HA.SA1) | ||||
| K51MP-C3 | ● | ● | M | 3 closers/gate (SB.SA.SA1) | ||||
| K51MP-D3 | ● | ● | ● | H | 3 closers/gate (DS.HA.SB) | |||
1. We provide additional door stop ( at 90°) features for all models. Email to request a quotation.
2. Learn more about Waterson gate closer design (SA,SA1,SB,…)
3. Learn more about mechanical or hydraulic hybrid closing types, or watch video
4. Please contact us directly concerning doors over the above specifications.
| Hinge Type | Gate Size | Product SKU |
FEATURES Door Range ≤ 120° |
Closing Type
Mechanical Only – M |
Closer Qty
Closer Type |
Finish | ||
|---|---|---|---|---|---|---|---|---|
| Self-closing | Fluid Motion | 90°Hold-open | ||||||
| Full Surface (exterior) | ≤ 150 lbs < 6’-0 x 4′-0 |
K51P-A2 | ● | M | 2 closers/gate (SA.SA1) | Stocking
US32D-630-Satin Stainless Steel Special Order US10B-695-Dark Satin Bronze – Powder coating on SST |
||
| K51P-B2 | ● | ● | H | 2 closers/gate (DS.HA) | ||||
| ≤ 260 lbs < 7’-0 x 4′-0 |
K51P-A3 | ● | M | 3 closers/gate (SA.SA.SA1) | ||||
| K51P-B3 | ● | ● | H | 3 closers/gate (DS.HA.SA1) | ||||
| K51P-C3 | ● | ● | M | 3 closers/gate (SB.SA.SA1) | ||||
| K51P-D3 | ● | ● | ● | H | 3 closers/gate (DS.HA.SB) | |||
1. We provide additional door stop ( at 90°) features for all models. Email to request a quotation.
2. Learn more about Waterson gate closer design (SA,SA1,SB,…)
3. Learn more about mechanical or hydraulic hybrid closing types, or watch video
4. Please contact us directly concerning doors over the above specifications.
Specification
Mid-Posts (interior)
Mid-Posts (exterior)
Full Surface (exterior)
People Also Ask:
Yes. Waterson heavy duty outdoor gate closers are manufactured in stainless steel 304 as standard, with 316 stainless steel available for high-humidity or coastal environments, providing strong resistance against corrosion, moisture, and long-term exterior exposure.
To select the correct hinge model and quantity, refer to:
Sizing should be based on gate width, height, weight, material, and wind exposure condition.
Closing force is adjusted using the numerical tension dial to increase or decrease spring tension, while the brake screw fine-tunes closing speed and soft-close control. Adjustment should be incremental and tested under actual swing conditions to maintain smooth, code-compliant operation.
You can check the Waterson Closer Hinge Adjustment for more guidance.
Yes. Waterson gate closers are designed to control closing speed even under pressure differentials caused by wind tunnel effects around buildings. By combining spring tension control with braking adjustment, the hinge helps reduce sudden acceleration and door slam in high-wind conditions. Proper sizing based on gate weight and exposure level is essential for optimal performance.
Field Tested 3 Years
Waterson heavy-duty outdoor gate closer have durably withstood the harsh seaside environment for three years with only minimal surface staining while maintaining perfect function — these spring-loaded automatic gate closer don’t need to add lubrication or readjustment.
Dolphin Beach Club in Florida, United States
3 years ago (2013/3/28)
3 years later (2016/3/25)
3 years ago（ 2013/3/28）
3 years later（ 2016/3/25）
Field Tested 3 Years
Waterson heavy-duty outdoor gate closer have durably withstood the harsh seaside environment for three years with only minimal surface staining while maintaining perfect function — these spring-loaded automatic gate closer don’t need to add lubrication or readjustment.
Dolphin Beach Club in Florida, United States
3 years ago (2013/3/28)
3 years later (2016/3/25)
3 years ago（ 2013/3/28）